Automatic water-ejector for vessels



(No Model.)

N. N. FROST.

AUTOMATIC WATER EJEGTOR FOR VESSBLS.

No. 422,391. Patented Mam. 4, 1890.

" ITMSEEEE- y UNITED STATES PATENT OFFICE.

NATHANIEL N. FROST, OF MALDEN, ASSIGNOR OF TVVO-THIRDS TO ABBOTT COFFIN, OF GLOUCESTER, AND EDWARD S. MERCHANT, OF VEST NEW- TON, MASSACHUSETTS.

AUTOMATIC WATER-EJECTOR FORVESSELS.

SPECIFICATION forming part of Letters Patent No. 422,391, dated March 4, 1890.

Application filed June 4, 1887. Serial No. 240,212. (No model.)

To a/ZZ whom, it may concern:

Beit known that I, NATHANIEL N. FROST, of Malden, in the county of Middlesex and State of Massachusetts, have invented a new and useful Automatic Ejector, ot which the following is a specification, reference being had to the accompanying drawings,iu which- Figure 1 shows my ejector applied to a lifeboat, and Fig. 2 is a sectional view of a porio tion of a life-boat and the ejector in place.

My invention consists in a chamber having an opening for the iniiow and outflow of water,

a valve which opens outwardly for the escape of air when water flows into the chamber,

r 5 and a valve which, when water iiows out of the chamber, opens inwardly to adlnit the in tiow of water, air, &c., through its opening.

The special objects of my invention are the autolnatic ejection of water or foul air from zc ships7 Steamers, boat-s, &c., and of sewage from cesspools which are near bodies of tidal water, where waves run high.

My ejector is of very great value and importance as an attachment for lifeboats,

which areofteu partially filled with water in launching, and from which there is seldom time for hailing out the water.

In the drawings, in which my ejector is shown applied to a life-boat, chamber A is of 3o a form specially suited for life-boats and smaller craft, and is made of pipe, which is secured t0 boat B, with its vertical section a open at a for the inflow and outflow of water near the keel h, and with a curved section a2' 3 5 leadingto the bottom of the well of the boat. Section a of chamber A is provided at its top with an outwardly-opening valve a3, and section a of chamber A is provided with a valve a4, which opens inwardly. IVhen the boat 4o falls, water rises iu section a of chamber A and forces the air in'section a against valve a3, whereby valve a3' is raised from its seat and air escapes through the valve-opening. As the boat rises, water in section a falls,

valve as Y returns to its seat, and a partial vacuum is created in section a, and then the water (or air) at valve a4 under atmospheric pressure forces the Vinwardlyopening valve a4 fromits seat and iiows into 4chamber A,

whence it escapes. Valve a4 immediately 5o falls to its seat, and by the next rising of the boat a partial vacuum is again formed in section a of chamber A, and another rush of water (or air) into chamber A takes place.

In practice I provide chamber A with a valve a5, by means otl which the ejector is rendered inoperative whenever desired, and I usually cover the lower end of section a2 with a strainer and place in section a2 an in termediate valve a6, corresponding to valve 6o a4. This valve is desirable, but not necessary.` Valves a3 a are somounted that they take their seats by gravity. lare should be taken, however, to make the valves tit their seats closely, so that when the air in the section a is driven upwardly it may not escape through valve-opening ot valve a, and when the water falls in the chamber air may not rush in at valve a3.

It will be readily seen that my ejector is 7o available for automatically ejecting water from holds of ships and also for Ventilating ships. Then used for the latter purpose, the chamber may be a simple stand-pipe, if desired. 1 75 My ejector is also available for Vremoving sewage from cesspools which are located near tide-waters and waters where waves run high. When used for this purpose, chamber Ais so placed that the tidal waters or -waves flow 8o into and out of section a of chamber A, thus forming the partial vacuum in the chamber and causing a rush of sewage from the cess pool to which the section, say a2 of chamber A, leads.

Vhat I claim as my invention is-n A chamber A, having au opening a near its lower end for the inflow and outiiow of water, an outwardly-opening valve a3 above the opening a', and a valve a4, opening in- 9o wardly, said valve a4 being in the lower part of chamber A, all substantially as and for the purpose set forth.

NATIIANIEL N. FROST.

Witnesses:

EDWARD S. BEACH, J OHN'R. Snow. 

